32-bit and 64-bit Win7 versions have twice the performance difference?

Windows 7 from another perspective, contains two major versions, one is 32-bit and the other is 64-bit. 64-bit systems must be stronger than 32-bit? Do you need a 64-bit Windows 7? 32-bit system and 64-bit system What is the difference?

You may be very confused, this article may help you.

First of all, I believe that a large percentage of netizens who choose 64-bit Windows 7 have a memory greater than or equal to 4GB. In 32-bit Windows 7, it may show that the memory can use 3.25G, which makes many users feel uneasy. That's right, the addressable memory space is really the most notable feature of 32-bit Windows 7 and 64-bit Windows 7.

32-bit CPU (accurately speaking CPU running in 32-bit mode) can only address up to 4GB of memory, subject to this, 32-bit operating system can only recognize up to 4GB of memory Because in the system, in addition to memory, there are many storage devices, so the real usable memory space is definitely less than 4GB, which is the 3.xxG displayed in the system properties we see.

But the 64-bit CPU has changed a lot. The maximum addressing space of the 64-bit CPU is 2 to 64 bytes of bytes. After calculation, the addressable space reaches an astonishing 16TB (treabytes). 16384GB. Of course, this is only a theory. From the practical application, the versions of Windows 7 64bit are 8GB-192GB respectively. Among them, the Home Edition can support 8GB of memory, the Home Premium can support 16GB of memory, and the 64-bit Windows 7 Professional. The Enterprise and Ultimate versions support up to 192GB of memory.

In other words, users with 4 GB or more of memory are limited by 32-bit hardware, so they cannot maximize the use of hardware resources. It is necessary to install a 64-bit operating system to maximize resource utilization.

It should be noted that 64-bit systems require 64-bit CPU support. Before installing 64-bit Windows 7, please confirm whether your CPU supports 64-bit. Generally speaking, the CPU purchased after 2006 is Support for 64-bit mode.

If you only consider this point, for users with less than 4GB of memory, 32-bit Windows 7 is more suitable for everyone, because the 64-bit version will take up more system memory resources, and the effect is counterproductive.

Next, let's consider the computing performance, which is also very concerned by many netizens.

In theory, the performance on 64-bit platforms far exceeds that of 32-bit platforms. The reason is in the data bit width with the CPU general-purpose register, the 64-bit platform is 64-bit, and the 32-bit platform is 32-bit, that is, the 64-bit platform can run 64-bit data instructions, and the processor can extract 64-bit data at a time (as long as Two instructions, extracting 8 bytes of data at a time, doubled the 32-bit (requires four instructions, extracting 4 bytes of data at a time), and theoretically doubles performance.

I believe that there will be many users shaken here, and even a lot of netizens with less than 4GB of memory want to experience the power of 64-bit Windows 7, but there is still a problem.

This is the problem with the application software.

Running 32-bit applications on 64-bit Windows 7 won't make you feel a leap in performance. Only 64-bit applications can maximize the benefits of a 64-bit platform. But it's clear that the current 64-bit applications are far below the 32-bit platform in number, but the good news is that more and more software developers are starting to port their software to 64-bit platforms.

At least for now, there are still a lot of software that is not compatible with Windows 7 64-bit versions, all of which takes time to resolve.

From the above we can see that the choice of 32-bit system or 64-bit system is not determined by one factor, we need to consider a variety of factors, combined with the actual situation of their own applications and hardware, make a choice.

I hope that the introduction of this essay can help users choose the platform version of Windows 7.